Truck Cap Handle Lock Assembly with Codeable Cylinder
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Solution Overview
Problem
Existing truck cap handle and lock assemblies are complex and difficult to use, lacking ease of installation and conversion to electronic actuation, and do not provide sufficient tactile feedback.
Innovation Solution
A simplified truck cap handle and lock assembly with a codeable lock positioned parallel to the glass access window, featuring a carriage subassembly with a shaft, pawl, return spring, detent balls, and springs, allowing easy installation and conversion to electronic actuation without retooling, and providing tactile feedback through snap fingers and detent mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional T-shaped handle and lock assembly is used, then the lock function is provided, but the device complexity increases and ease of operation decreases
Solution Approach 1:
The handle assembly is divided into separate functional modules: a handle body, a lock cylinder, a carriage subassembly with detent balls, and snap fingers. This segmentation allows each component to perform its specific function independently, simplifying the overall operation while maintaining security functionality.
Solution Approach 2:
The handle assembly integrates multiple functions into a single unit: it serves as both a handle for opening the window and a lock mechanism for securing it. The same assembly also provides tactile feedback through snap fingers and detent balls, eliminating the need for separate indicators or mechanisms.
2Adaptability or versatility
If a traditional lock assembly is used, then security function is provided, but adaptability to electronic actuation is limited
Solution Approach 1:
The carriage subassembly is designed with a universal interface that can accommodate both manual key operation and electronic actuation. The detent balls and springs mechanism remains the same, but the actuation method can be changed without retooling, allowing easy conversion to electronic versions.
Solution Approach 2:
The lock cylinder can be selectively removed or retained based on the application. For electronic versions, the key cylinder portion can be extracted while keeping the carriage subassembly intact, allowing the same base design to serve both keyed and electronic lock applications.
3Ease of operation
If a simplified handle assembly is used, then ease of operation improves, but tactile feedback may be insufficient
Solution Approach 1:
The assembly incorporates snap fingers that provide audible and tactile feedback when the window is locked or unlocked. The detent balls engage with corresponding slots to create distinct tactile sensations, giving the user clear information about the lock state without visual indicators.
Solution Approach 2:
The tactile feedback mechanism is merged into the primary locking structure itself. The snap fingers and detent balls are integral parts of the carriage subassembly, combining the locking function with the feedback function in a single integrated mechanism rather than adding separate indicator components.
Data Source
AI summary
A simplified truck cap handle and lock assembly is provided. Unlike truck cap handle and lock assemblies known in the art, the assembly is comprised of a codeable lock that is disposed in a position that is not perpendicular to the glass access window of the cap. The lock of the present invention is rotated 90° from the perpendicular. Further, the lock is codeable because it is preferably keyed to match other locks and ignition key switch of the vehicle with which the assembly is used. The invention provides a unique locking structure having a number of components that form the assembly. The assembly is easy to use and easy to install in an aftermarket application. Further, the assembly can be easily converted to an electronic actuated version without any retooling of the component parts of the assembly. The assembly provides the user with tactile feedback as to its operation.